January 2 » American statesman and diplomat John Hay announces the Open Door Policy to promote trade with China.
January 16 » The United States Senate accepts the Anglo-German treaty of 1899 in which the United Kingdom renounces its claims to the Samoan islands.
March 16 » Sir Arthur Evans purchased the land around the ruins of Knossos, the largest Bronze Age archaeological site on Crete.
April 15 » Philippine–American War: Filipino guerrillas launch a surprise attack on U.S. infantry and begin a four-day siege of Catubig, Philippines.
May 29 » N'Djamena is founded as Fort-Lamy by the French commander Émile Gentil.
October 19 » Max Planck discovers Planck's law of black-body radiation.
Day of marriage May 15, 1925
The temperature on May 15, 1925 was between 10.8 °C and 23.5 °C and averaged 16.9 °C. There was 12.1 hours of sunshine (77%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from September 19, 1922 to August 4, 1925 the cabinet Ruys de Beerenbrouck II, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
In The Netherlands , there was from August 4, 1925 to March 8, 1926 the cabinet Colijn I, with Dr. H. Colijn (ARP) as prime minister.
January 30 » The Government of Turkey expels Patriarch Constantine VI from Istanbul.
May 5 » Scopes Trial: Serving of an arrest warrant on John T. Scopes for teaching evolution in violation of the Butler Act.
May 14 » Virginia Woolf's novel Mrs Dalloway is published.
May 25 » Scopes Trial: John T. Scopes is indicted for teaching human evolution in Tennessee.
July 21 » Malcolm Campbell becomes the first man to exceed 150mph (241km/h) on land. At Pendine Sands in Wales, he drives Sunbeam 350HP built by Sunbeam at a two-way average speed of 150.33mph (242km/h).
October 30 » John Logie Baird creates Britain's first television transmitter.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I30985.php : accessed February 17, 2026), "Harm Evenhuis (1900-)".
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